Soil-pulverizing attachment for plows.



No. 790,769. PATENTED MAY 23. 1905.

Y H. A. WILBERG.

SOIL PULVBRIZING ATTACHMENT FOR FLOWS.

APPLIQATION FILED FEB. 14.1905.

8 155 Q. PVz'Ze/y UNlTED STATES Patented May 23, 1905.

HENRY ADOLPH W ILBERG, OF NOME, NORTH DAKOTA.

SOIL-PULVEI RIZING ATTACHMENT FOR PLOWS- SIECIFIGATION forming; part ofLetters Patent No. 790,769, dated May 23, 1905.

i Application filed February 14, 1905. Serial No. 245,597.

1'0 alt whom, it may concern:

Be it known that I, HENRY ADOLPH NIL- BERG, a citizen of the UnitedStates, residing at Nome, in the county of Barnes and State of NorthDakota, have invented certain new and useful Improvements inSoil-Pulverizing Attachments for Flows; and I do hereby declare thefollowing to be a full, clear, and eXact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to a soil leveling and pulverizing attachment forbreaking-plows and the like; and my invention consists of certain novelfeatures of construction and combination of parts, the preferred formwhereof will be hereinafter clearly set forth, and pointed out in theclaims.

The main object of my invention, among others, is to provide a simpleform of attachment which may be easily connected to the plow-beam andproperly adjusted to ride over and smooth down and crush the coarserparticles of soil, as clods, &c.

A further object is to render my attachment easily adjustable, wherebyit maybe disposed slightly in advance of the moldboard and to one sidethereof or to the rear of said moldboard,whereby the soil will bethoroughly leveled and left in a finely-pulverized condition to form aseed-bed, thereby saving the extra labor of specifically harrowing orrolling the land.

Other objects and advantages will be hereinafter made clearly apparent,reference be ing had to the accompanying drawings, which are considereda part of this application, and in which Figure 1 shows a top plan Viewof my invention as applied to use upon a breaking-p10 w of the usual orany preferred construction. Fig. 2 is a side elevation of my inventioncomplete ready for use. Fig. 3 is a detail in perspective,showing one ofthe plurality of wheels employed by me for crushing and leveling thefreshly-plowed soil. Fig. 4 is a detail view showing a plan of the frontportion of the framework of my pulverizer attachment. Fig. 5 is a rearedge view of the construction shown in Fig. 4:. Fig. 6is a detail inperspective,

showing the controlling-finger designed to hold the cultivator-framenormally straight, but permitting said frame to be moved incident to thestrain placed thereon in turning at the end of the furrow.

For convenience of description the various parts of my invention andaccessories deemed necessary to cooperate therewith numerals will beemployed, the same numeral applying to a similar part throughout theseveral views.

Referring to the numerals on the drawings, 1 indicates a plow-beam ofany preferred variety, while 2 and 3 indicate the handles thereof, allsubstantially of the usual construction, while 1 indicates the moldboardof the plow designed to turn the furrow as the plow is drawn through thefield. I attach my pulverizing and leveling appliance to the moldboardside of the plow, as clearly shown in Fig. 1, and my leveling attachmentconsists of a plurality of wheel-like members or segmental rollers 5,each having a roughened periphery and all of them rotatably mounted uponthe shaft 6, the ends of which are secured in the brackets orbearing-seats 7, bolted to the framework 8, as shown in Fig. 2.

The framework 8 is substantially U-shaped in form, the front or middlemember 9 of which is disposed parallel with the face of all the wheels,and has connected near its middle portion the forwardly-projectingmember 10, provided at its central point with an upwardlydirected stud11, which is designed to be extended upward through the aperture 12 inthe plate 18, said plate being secured, by means of the bolt 14, to thebracing-rod 15. The plate 13 is also connected by the bolt 16, whichpasses through the aperture 17, to the outer end of the arm 18, said armbeing preferably formed of a section of tubing, whereby the inner endthereof will receive the end of the rod 19, thus permitting the lengthof the arm to be adjusted and made shorter or longer, as desired, suchadjustment being secured by means of the setscrew 20 or equivalentthereof.

The rod 19 is pivoted to the plow-beam by means of the bracket 21, so asto insure that any desired adjustment may be attained between said rodand the arm 18, whereby the 4 pulverizing-wheels or roller composedthereof may be moved laterally outward or inward, so that thepulverizing-wheels will travel over the proper pathway to crush andlevel the earth as delivered from the moldboard. After the stud 11 isextended through the aperture 12 it is secured therein by a suitablenut, so that the stud may be left to turn freely in its seat in saidaperture.

The plate 13, it will be observed by reference to Fig. 6, is providedwith a rearward extension or finger 22, which is convex upon its loweredge, as indicated by the numeral 23, said convex face or V-shapedextension 23 being designed to be received by the recess 24 in thefriction-spring 25, mounted upon the rearwardly-curved bar 26 of theconnectingplate 10, the latter, as before explained, being firmlysecured to the framework 9 in any preferred way, as by the rivets 27 orequivalent means. It therefore follows that when the finger 22 rests inthe recess 24 it will cause the pulverizer-wheels to travel over thesoil and prevent the framework from swinging upon the pivot point or lug11 excepting when the plow is being turned, when said finger will rideout of the recess 2a, and thereby relieve the strain which wouldotherwise come upon the finger or connecting parts between the frameworkand the plate 13, it being understood that when the plow is againstarted upon its work the framework carrying the wheels beingcounterbalanced by equal distribution of weight will conform to itsnormal position and travel at right angles to the plane of the plow.

It will be understood that the teeth upon the segmental members orwheels 5 may be of any desired character and length to best perform.their office of crushing and leveling the soil, reducing the clods andcoarser particles to a pulverized condition, and thereby prepare thesurface of the soil for a perfect seed-bed, rendering it unnecessary tofollow the plow with the harrow or roller, as is now common.

I prefer to form the member 15 of a section of tubing, when the rear endthereof may be flattened and provided with an aperture to receive a bolt14:, as before explained, while the forward end is designed to looselyreceive the connecting-rod 28, the forward end of which is pivoted tothe plow-beam at any desired point by means of the bracket 29 and theball and socket 30, as shown in Fig. 1.

The tubular member 15 and the connectingrod 28 may be relativelyadjusted and secured by means of the set-screw 31 or equivalent device,and it therefore follows that by a proper adjustment of the frameworkand securing the set-screws 20 and 31 in their respective operativepositions my improved soil-pulverizing attachment may be secured in itsoperative positions, so that the crushing-wheels will follow immediatelyupon the newly-turned furrow, or said wheels may be moved farther awayfrom the plow, so as to act upon the next preceding furrow, as may bedeemed productive of the best results.

The various parts of my invention may be cheaply and expeditiouslymanufactured and each assembled in its operative position, and while Ihave described the preferred combination and construction of parts Idesire to comprehend in this application all such substantialequivalents and substitutes as may be considered as falling fairlywithin the scope and purview of my invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

The herein-described plow attachment designed for pulverizing andleveling the surface of the soil as a seed-bed and comprising aplurality of crushing-wh eels rotatably mounted side by side in asuitable framework; means to adjustably connect said framework to theplow-beam whereby the crushing-wheels will be secured at any pointdeemed productive of the best results and an extension or finger 22frictionally engaging a spring-plate 25 and designed to hold thewheel-carrying frame normally disposed at right angles to the plane ofthe plow, but permitting said framework to swing upon its pivot-pointincident to the turning of the plow at the end of the furrow, allcombined substantially as specified and for the purpose set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HENRY ADOLPH IVILBERG.

Witnesses:

OLE HANSON, THEo. ToRBENsoN.

